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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

第13卷    第2期    总第71期    2016年2月

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文章编号:1672-7029(2016)02-0226-07
武广客运专线通用轨道谱及其反演简化算法
陈宪麦12,向尚1,徐磊3,贺天龙1,陈文韬1,贾晨1

(1.中南大学土木工程学院,湖南长沙 410075;
2.高速铁路建造技术国家工程实验室,湖南长沙 410075;
3.西南交通大学牵引动力国家重点实验室,四川成都 610031
)

摘 要: 基于铁路轨道精细化管理的需要,针对武广客运专线2013年全年的轨道不平顺检测数据进行功率谱密度的计算与统计处理,采用新的4参数拟合公式,建立武广客运专线上、下界限谱和建议谱的通用谱结构及拟合参数。同时,出于车-轨(桥)系统动力仿真的需要,基于国内已较为成熟的谱密度反演算法,考虑谱密度时频域转化的统一性,提出在获得谱密度结构及拟合参数的基础上,直接模拟任意波段及长度的轨道不平顺空间序列的简化算法。

 

关键字: 武广客运专线;拟合公式;通用轨道谱;轨道不平顺模拟

Study on general track spectrum and the simplified inversealgorithm of Wuhan-Guangzhou passenger special line
CHEN Xianmai1,2, XIANG Shang1, XU Lei3, HE Tianlong1, CHEN Wentao1, JIA Chen1

1. School of Civil Engineering, Central South University, Changsha 410075, China;
2. National Engineering Laboratory of High Speed Railway Construction Technology, Changsha 410075, China;
3. State Key Laboratory of Traction Power , Southwest Jiaotong University, Chengdu 610031, China

Abstract:In order to meet the requirements of refined management of railway track, the paper described the investigation on power spectrum density calculation and statistical processing for track irregularity inspection data of Wuhan-Guangzhou Passenger Special Line in 2013. The general spectrum structure of the upper-lower boundaries and suggestion spectrum, were established by adopting a new four-parameter fitting formula. Besides, the track irregularity spatial series should be constructed with the requirement of vehicle-track (or vehicle-bridge) system dynamical simulation being taken into consideration. Therefore, based on the domestic inverse algorithms of spectrum density which have been relatively matured, and the consideration of the uniformity in the conversion process of spectrum density in time and frequency domain, this paper proposed a simplified inverse algorithm which can directly simulate any wave-band at any length of the track irregularity spatial series on the basis of acquiring the spectrum density structure and fitting parameters.

 

Key words: Wuhan-Guangzhou passenger special line; fitting formula; general track spectrum; track irregularity simulation

ISSN 1672-7029
CN 43-1423/U

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